<!DOCTYPE HTML>
<html>
<!--
Test that calling setVisible('false') on an iframe causes its visibility to
change.
-->
<head>
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
  <script type="application/javascript" src="../browserElementTestHelpers.js"></script>
  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
</head>
<body>

<script type="application/javascript;version=1.7">
"use strict";

SimpleTest.waitForExplicitFinish();
browserElementTestHelpers.setEnabledPref(true);
browserElementTestHelpers.enableProcessPriorityManager();

function runTest() {
  var iframe = document.createElement('iframe');
  iframe.setAttribute('mozbrowser', true);

  iframe.src = browserElementTestHelpers.emptyPage1;

  var childID = null;
  Promise.all([
    expectOnlyOneProcessCreated('FOREGROUND').then(function(chid) {
      childID = chid;
    }),
    expectMozbrowserEvent(iframe, 'loadend')
  ]).then(function() {
    var p = expectPriorityChange(childID, 'BACKGROUND');

    // We wait until mozbrowserloadend before calling setVisible, because
    // setVisible isn't available until mozbrowser has loaded.  In practice, that
    // means we can call setVisible once we've gotten /any/ mozbrowser event.
    iframe.setVisible(false);
    return p;
  }).then(function() {
    var p = expectPriorityChange(childID, 'FOREGROUND');
    iframe.setVisible(true);
  }).then(SimpleTest.finish);

  document.body.appendChild(iframe);
}

addEventListener('testready', runTest);

</script>
</body>
</html>
